Multiplexing method for narrowband internet of things physical downlink channels, base station, and user equipment

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A method executed in a base station, the method comprising:

• multiplexing more than one narrowband Internet of Things physical downlink channel in the same subframe, wherein the narrowband Internet of Things physical downlink channels comprise narrowband Internet of Things physical downlink control channels “NB-PDCCHs” and/or narrowband Internet of Things physical downlink shared channels “NB-PDSCHs”, a minimum granularity for resource allocation of the narrowband Internet of Things physical downlink channels is in a unit of an enhanced resource element group “EREG”, and the EREG is composed of multiple resource elements defined in two dimensions of time and frequency in the same subframe;
• and transmitting a downlink subframe.

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A user equipment, comprising:

• a receiving unit, configured to receive a downlink subframe, wherein more than one narrowband Internet of Things physical downlink channel is multiplexed in the subframe, the narrowband Internet of Things physical downlink channels comprise narrowband Internet of Things physical downlink control channels “NB-PDCCHs” and/or narrowband Internet of Things physical downlink shared channels “NB-PDSCHs”, a minimum granularity for resource allocation of the narrowband Internet of Things physical downlink channels is in a unit of an enhanced resource element group “EREG”, and the EREG is composed of multiple resource elements defined in two dimensions of time and frequency in the same subframe;
• and a demapping unit, configured to extract, from the received downlink subframe, a narrowband Internet of Things physical downlink channel for the user equipment.

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A method executed in a user equipment, the method comprising:

• receiving a downlink subframe, wherein more than one narrowband Internet of Things physical downlink channel is multiplexed in the subframe, the narrowband Internet of Things physical downlink channels comprise narrowband Internet of Things physical downlink control channels “NB-PDCCHs” and/or narrowband Internet of Things physical downlink shared channels “NB-PDSCHs”, a minimum granularity for resource allocation of the narrowband Internet of Things physical downlink channels is in a unit of an enhanced resource element group “EREG”, and the EREG is composed of multiple resource elements defined in two dimensions of time and frequency in the same subframe;
• and extracting, from the received downlink subframe, a narrowband Internet of Things physical downlink channel for the user equipment.

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